Markoz wrote on Dec 12^th, 2021 at 2:02am:

After testing the CS 777-300ER, after starting on the runway, instead of taking off, I taxiied off the runway and onto the taxi way, and taxied to the Gates, and parked. I found that the turning during taxiing, was the just same as it is for the CS 777-200ER. :-/ What type of controller are you using? Note. I'm using a Logitech Extreme 3D Pro joystick.

Seems odd that so many are experiencing this issue while your 777 seems to do fine.
Have you confirmed that you're not on some future beta we're not?

Also, one thing I always check when a plane is acting funky is if the flight model turned itself back to legacy.  I've seen MSFS do this on its own, esp after updates.